Reword your search using synonyms, or alternative spellings.
If searching for a part number, try searching for just part of the part number. For example, leave off the dash number or the manufacturer's prefix.
If you get too many results, try narrowing the search down by putting quotation marks around words or phrases that the results must contain. By default, searches look for results that have any of the words that you search for, but quotation marks indicate required words or phrases. Example: If a search for seat rail returns a bunch of irrelevant results that contain seat but not rail, then search again for seat "rail" to only get results that contain rail. Similarly, you can search for "seat rail" to only get results that contain the exact phrase seat rail.
If the description you are searching for may have a hyphen in it, try searching both with the hyphen and replacing the hyphen with a space.